immutable-js VS underscore-contrib

Compare immutable-js vs underscore-contrib and see what are their differences.


Immutable persistent data collections for Javascript which increase efficiency and simplicity. (by immutable-js)


The brass buckles on Underscore's utility belt (by documentcloud)
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immutable-js underscore-contrib
38 0
32,742 619
0.1% 0.0%
7.6 0.0
9 days ago 2 months ago
TypeScript JavaScript
MIT License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of immutable-js. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-07-12.


Posts with mentions or reviews of underscore-contrib. We have used some of these posts to build our list of alternatives and similar projects.

We haven't tracked posts mentioning underscore-contrib yet.
Tracking mentions began in Dec 2020.

What are some alternatives?

When comparing immutable-js and underscore-contrib you can also consider the following projects:

Immer - Create the next immutable state by mutating the current one

mori - ClojureScript's persistent data structures and supporting API from the comfort of vanilla JavaScript

ramda - :ram: Practical functional Javascript

lodash - A modern JavaScript utility library delivering modularity, performance, & extras.


immutability-helper - mutate a copy of data without changing the original source

fp-ts - Functional programming in TypeScript

buckets - A complete, fully tested and documented data structure library written in pure JavaScript.

JSON-Schema Faker - JSON-Schema + fake data generators

hashmap - HashMap JavaScript class for Node.js and the browser. The keys can be anything and won't be stringified

Mout - Modular JavaScript Utilities